File:LAPD Bell 206 Jetranger.jpg|thumb|A US police Bell 206 helicopter
A '''helicopter''' is a type of rotorcraft
in which Lift (force)|lift
are supplied by Helicopter rotor|rotor
s. This allows the helicopter to take off and land vertically, to hover (helicopter)|hover
, and to fly forward, backward, and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft
and many forms of VTOL
(vertical takeoff and landing) aircraft cannot perform.
The English word ''helicopter'' is adapted from the French word , coined by Gustave Ponton d'Amécourt
in 1861, which originates from the Greek language|Greek
''helix'' () "helix, spiral, whirl, convolution"
[Genitive case|GEN ''helikos'' (the kappa|κ being Romanization of Greek|romanised as a ''c''); see and .]
and ''pteron'' ()...